usb: dwc3-msm: Keep wakeup IRQs disabled for automotive platforms

'Commit b720b5a0 ("usb: host: Modify PM handling for USB
interconnect platforms")' is not powering down the core as a part
of system suspend because of which wakeup IRQs are enabled. Some
spurious IRQ can resume the system, hence failing the Suspend to
RAM usecase. USB wakeup from PM suspend/hibernation is not a
requirement for automotive/telematics platforms.
Use enable_wakeup parameter in dwc3_msm_suspend call to keep the
IRQs disabled. White at it, also get rid of DT flag
"qcom,no-wakeup-from-pm-suspend" which becomes useless now.

Change-Id: I204ba0cbcee845d04d8b6e36b8e7d3b07c2d6730
Signed-off-by: Ajay Agarwal <ajaya@codeaurora.org>